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OpenStudy (anonymous):
solve the system of equations using the addition method. state whether the system is consistent or inconsistent. if it is consistent state whether it is dependent or independent. 5x +y = 9 10x-7y=-18
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OpenStudy (saifoo.khan):
Multiply the first equation by -2.
OpenStudy (anonymous):
why
OpenStudy (saifoo.khan):
So that you can cancel out one of the variables. x or y.
OpenStudy (anonymous):
so i do 5x *-2?
OpenStudy (saifoo.khan):
-2 ( 5x +y = 9) whole equation
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